Shtf winter, Buddy heater- indoor safe!

 Mark figured out the heat the same way he figured out everything else now: in his head, quietly, over and over again, until the numbers stopped changing.

He knew what each propane tank meant, even if he never said it out loud. A standard tank—what everyone still called a “twenty”—could run the Buddy heater on low for about a hundred hours if you treated it with respect. Less if you got sloppy. A lot less if you panicked and turned it up.

They had four of those, lined along the garage wall. Plus the forklift tank he’d hauled home during the last week the plant was open—heavy, awkward, and worth maybe another tank and a half. Two, if they were careful.

Six tanks’ worth of heat, more or less.

Six hundred hours.

That number followed him everywhere.

They didn’t try to heat the house. That idea died early.

Instead, they built a small world inside the living room.

First came the mattresses—four of them dragged down from bedrooms and stacked across the floor, side by side. On top of that, they set up the old family camping tent, the big one they used to take to state parks in summer. The poles creaked, the fabric smelled faintly of pine and campfire smoke, but it still stood.

Mark tied the tent down using its handles and guy points, looping cord and paracord around table legs, the couch frame, anything solid. It wasn’t about wind—it was about keeping the shape tight, keeping heat from leaking upward.

Then they layered everything else.

Tarps first, draped over the tent like a second skin. Sheets after that. Old blankets, shower curtains, moving pads. The whole thing became a strange, lumpy structure in the middle of the living room, half fort, half cocoon.

Ugly. Effective.

Inside the tent, on top of the mattresses, the cold backed off just enough to matter. The floor didn’t steal heat from their bodies anymore. The air stayed warmer, longer. When the heater shut off, it cooled slowly instead of all at once.

That was the difference between surviving and not.

They heated time, not space.

Two hours in the morning—enough to get joints moving, enough that breath stopped fogging quite so badly. Two or three hours at night, when the dark pressed in and the house felt too big and too quiet.

On the worst days, when the wind cut through the walls and the temperature dropped hard, they’d steal an extra hour and pretend not to think about February.

Four to six hours a day. That was the rhythm.

At that rate, the math almost worked.

Late November to March—about a hundred and twenty days. Four hundred eighty to seven hundred hours of heat if winter dragged on. Six hundred hours in the tanks if nothing went wrong.

No margin. Just overlap.

Mark never wrote it down. Writing it down would make it fragile. Instead, he listened to the heater, felt the warmth inside the tent, and counted hours the way some people counted prayers.

They learned to do everything while the heater was already running.

Boiling water, especially.

They set a metal grate over the Buddy heater and balanced a pot on it. It wasn’t fast. The heat rose instead of wrapping around the pot like a real flame used to. But if you were patient—if you didn’t rush—it would boil.

Snow melt. Drinking water. Corn soaking in ash water. All of it happened while the tent was warm.

“Put the pot on,” Lisa would say. Not boil water. Just use the heat while it existed.

Steam meant success now, not speed.

The kids learned to watch for it, learned that bubbles were something you waited for.

By January, Mark could feel the propane without touching the tanks. He could hear it in the heater’s steady hum, sense it in how long the tent held warmth after shutoff. He knew when a tank was nearing empty by instinct alone.

Six hundred hours sounded generous when he first counted it.

Spread across a Wisconsin winter, it wasn’t.

It was just enough—if they stayed disciplined, if the heater behaved, if the cold didn’t turn brutal, if spring remembered to show up.

A lot of ifs.

But every night, zipped into the tent, layered under blankets on the mattresses, with tarps and sheets holding the warmth close, they were still there.

Still breathing. Still together.

And as long as the math kept holding—barely—Mark believed they had a chance to see the snow finally melt.